Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 666

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-666 A Nanjemoy MD VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-666 0 Nanjemoy MD WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2015-12-03   
240-666 1 Nanjemoy MD WASHDC127MD  073H TELNYX LLC 236   2017-04-27   
240-666 2 Nanjemoy MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
240-666 3 Nanjemoy MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
240-666 4 Nanjemoy MD   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-06-16   
240-666 5 Nanjemoy MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-04-02   
240-666 6 Nanjemoy MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2015-08-23   
240-666 7 Nanjemoy MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-03-14   
240-666 8 Nanjemoy MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-03-14   
240-666 9 Nanjemoy MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-04-02   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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